Pulley attachment for electric lamps



2 Sheets-Sheet 1.

(N0 Model.)

T. H. BRADY. PULLEY ATTACHMENT FOR ELECTRIC LAMPS.

Patented Dec. 9, 1890.

2 SheetsSheet 2.

(No Model.)

T. H. BRADY. PULLEY ATTACHMENT FOR ELECTRIC LAMPS. No. 442,415.

Patented Dec. 9, 1890.

w: mums 9mm: 2a., minimums. wumumon, n. c.

UNITE STATES PATENT OFFICE.

THOMAS H. BRADY, OF NEW' BRITAIN, GONKECTICUT.

PU LLEY ATTACHMENT FOR ELECTRIC LAMPS.

SPECIFICATION forming part of Letters Patent No. 442,415, dated December9, 1890. Application filed July 14, 1890. Serial No. 358,663. (ll'omodel.)

To all whom it may concern:

Be it known that I, THOMAS II. BRADY, a citizen of the United States,residing at New Britain, in the county of Hartford and State ofConnecticut, have invented certain new and useful Improvements in PulleyAttachments for Electric Lamps, of which the following isaspecification.

My invention relates to improvements in pulley attachments for electriclamps; and the objects of my improvements are to protect the span wireor cable within the holdingsocket from the weather, and to more securelyhold the pulley-frame in place upon said span wire or cable.

In the accompanying drawings, Figure 1 is a front elevation of my pulleyattachment with a portion of a span wire or cable and a portion of thecable for supporting a lamp. Fig. 2 is a front elevation of said pulleyattachment with the cap-plate removed. Fig. 3 is a detached view showingthe inner side of the eapplate. Fig. a is a vertical section of aportion of my pulley attachment on line as a: of Fig. 1. Fig. 5 is afront elevation of a modified form of my pulley attachment with aportion of the span wire or cable and a portion of the cable forsupporting a lamp. Fig. 6 is a plan view of said attachment with thecap-plate removed. Fig. 7 is a reverse plan of said cap-plate, and Fig.Sis a detached vertical section on line y y of Fig. 5.

The presentinvention is in the nature of an improvement upon the pulleyattachment shown, described, and claimed in my application, Serial No.314,500, filed March 19, 1890.

A designates the pul1ey-cover, open at the bottom edge, but inelosed onall other edges, excepting the cableexit 5 at the upper righthand cornerof one side edge, as shown. This pulley-cover is perforated on its broadsides for receiving the axle G of an ordinary pulley. At its top edge itis provided with a socket-plate 7, having a roughened or ridgedsocketgroove S, that extends longitudinallyalong the inner face of saidplate in a curved or serpentine course, as shown. This plate is providedwith threaded screw-holes 9 for the reception of fasteningscrews, andits upper'edge, as far as the socket-groove 8 extends, is provided witha forwardly-projecting shutting-over flange 10, the projection of whichis equal to the thickness of the cap-plate 11. The capplate 11 isprovided with a like socket-groove S and with holes 12, which registeror coincide in position with the holes 9 in the socket-plate, wherebythe cap may be secured to the front of and bound upon the socket-plate 7by means of the fastening-screws 13, as shown. The upper edge of thecap-plate 11 is of a form which will fit underneath the flange 10, asshown.

The modified form, Figs. 5 to S inclusive, has the same pulley-cover andparts containing the same socket-grooves; but these parts are divided ona horizontal instead of a vertical line. At the top of the pulley-coverI form the socket-lug 17,11aving the serpentine socket-groove 8 andthreaded screw-holes 19. The cap-plate 21 is also provided with theserpentine socket-groove S and screw-holes 22, that register with thethreaded holes 1 9 in the socket-lug 17, whereby the cap may be securedin place and clamped upon its companion part by means offastening-screws 13. I provide the side edges of the cap withdownwardly-projecting shutting-over flanges 20 to cover the seam andprotect the span wire or cable 0 the whole length of the socket. Ifdesired, the flanges may also extend across the ends of the cap, less aslotat each end of the socket-groove, to admit the span-wire.

The pulley is designed to receive the ordinary cord or cable I forraising and lowering the lamp, and the socket-grooves 8 to receive thespan wire or cable C, to which the pulley attachment is secured.

By my improvements I effectually protect the whole length of theclamping socket grooves from the weather, so that they and that portionof the span wire or cable which is incloscd thereby may not becomeoxidized or otherwise injured. The shutting-over flange in both formscovers the seam and protects it, and is particularly useful when aspan-wire is employed so large that the seam is necessarily open.

By making the clam pin gsocket in a curved or serpentine path in thedirection of the length of the span wire or cable I more securely fastenthe pulley thereto with less liability of its working out of place.

It is evident in the construction first described that it would only bean inversion of the parts to form the flange 10 on the capplate 1}instead of on the socket-plate.

I claim as my inventi0n- 1. The herein-described pulley attachment forelectric lamps, the same consisting of the pulley-cover having thesocket-plate 7, with the f0rWardl -'-pr0jecting shutting-over flange 10at its upper edge, and the cap-plate 11, with its upper edge fittedunderthe flange 10, substantially as described, and for the purposespecified.

